1. Blast hole diameter is about 34m-42m, and the drill hole depth is 6m.
2. This kind of machine is a new kind of high-efficiency air-leg rock drill machinery.
3. It is suitable for drilling and blasting under various rocks and direction angles.
4. It is mainly used for blasting holes and other drilling works in quarries, railway construction, water conservancy construction, and defense project facility.
5. First-class level Drilling Tools, are suitable for sites without power or air pressure equipment, it has wide adaptability for high mountains and plains, and extreme temperature (±40ºC).

Causes of Oil Circuit Failure 
The fuel used by the internal combustion rock drill is No. 70 gasoline and No. 15 gasoline engine lubricating oil. The two should be matched in strict accordance with the volume ratio of 12:1, and the fuel and fuel tank should be kept clean. When the machine fails, the first thing to check is the oil circuit. There are two reasons for too much oil intake: one is that the throttle needle valve is opened too much; the other is that the air filter is blocked by dust, the first check valve is too elastic or the throttle valve is opened too high.